Gear mechanism.



PATENTED JULY 9, 1907.

W. M. MORGAN.

GEAR MEGHANISM.

\ uruouron rmm s211111, 190s.

f i D ATTORN WITNESSES:

A THE NoRRm PE1-:Rs e., WASHINGTON. D. c.

WAITMAN M. MORGAN, OF SHEFFIELD, MISSOURI.

GEAR MECHANISM.

Specification of Letters Patent.

Patented Juiye, 1907.

Application filed September 11,1906. Serial No. 334,187.

To all whom it may concern:

Be it known that I, WAITMAN M. MORGAN, a citizen` of the United States of America, residing at Sheffield, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Gear Mechanism, and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others to make and use the same, reference being had to the accompanying drawing, forming a part of this specification. i

The object of the invention is to effect a uniform reciprocating movement of the rack without slipping of the pinion, while maintaining constant engagement of the teeth of both rack and pinion. Second- To permit the oscillation of the driving shaft, and, Third-To automatically lock and release the shaft in the reciprocating movements of the rack.

The invention consists in the novel construction and combination of parts such as will be iirst fully described and then specifically pointed out in the claims.

In the drawingswFigure 1 is a plan view of the bed and of the mechanism embodying the invention. Fig. 2 is a longitudinal vertical sectional view of the mechanism showing the rack and pinion, and `also the bed plate taken upon the line x x in Fig. 3, the lower portion of the rack and guide bar being partially broken away. Fig. 3 is a front view of the mechanism showing the pinion in a position for continuous action with the gear at the upper end of the rack and the shaft released the rack being partially broken. Fig. 4 is a detail broken view of a portion of the rack in perspective showing the web and the openings for the gear of the pinion.

Similar numerals of reference indicate corresponding parts in all the figures of the drawing.

Referring to the drawing, 10 indicates a horizontal bed plate or support which as shown is rectangular in form. Longitudinal portions or anges 11 of thebed plate are bent at right angles and extended downwardly a short distance. In the bed plate a short distance in rear of the forward ends of said plate is a transverse opening 12 extending from the inner surface of the flanges 1 1 on one side of the bed plate to the inner surface of the other flange.

Within the opening 12 and secured rigidly to the inner surface of the iianges 11 are the vertical grooved guide plate 14 which extend a considerable distance above and a like distance below the line of the surface of bed 10 the grooves 14X on said plates being opposite each oth er in position.

1G indicates the reciprocating rack which consists of an oblong casting or frame of the proper length to afford the stroke desired the longitudinal outer surfaces of whichv frame extend within the grooves 14X of the guide plate 14. The outer surfaces of the ends of the frame are curved from the longitudinal sides in arcs of circles and outwardly as shown at 17. Upon the inner surfaces of the rack frame are the rack teeth 18, and intermediate ,apertures or spaces 19. Each tooth consists oi two outwardly curved surfaces or two arcs of circles meeting at a point and the lines of said surfaces being drawn from the pitch line the spaces 19, between the teeth being drawn in a circle with the center below the pitch line. The teeth 18 and spaces 19 are made in series upon each side of a narrow casting or web 2O and the teeth 18 upon one side of the web 20 are in position opposite the spaces or openings 19 on the other side of the web.

22 indicates the circular plate of the pinion within the rack 16. The teeth 23 of the pinion are precisely the same as teeth 18 upon the rack and between said teeth are spaces or openings 24 which are the same as the spaces or opening 19 in said rack. The seriesof teeth 23 are upon each side of a web 25 upon the pinion and the series of teeth upon one side of the web alternating with the spaces upon the other side of the web. The surface of the web is upon a line concentric with the 4pitch line of the gear.

At the ends of the rack the surface of the web extends a short distance outwardly from the pitch line of the teeth so that the meshing gear of the pinion will prevent the gear of the pinion from entering below the pitch line of the teeth of the rack and locking.' When the pinion vis in mesh with the gear at the ends of the rack the teeth can only enter the openings 18 in the rack to the planes of the pitch lines thefteeth on the rack being slightly wider apart and the teeth of the pinion will have a rolling movement upon the teeth of the rack and out of the apertures while holding themselves within the apertures, to the working depth and preventing disengagement of the pinion with the rack. In the rolling movement of the teeth on the pinion with the teeth of the rack it will be observed that the points of two or more of the teeth at the ends of the rack, and two or more teeth of the pinion in the series of teeth engage simultaneously in such a manner as tov clutch the teeth in the rolling movement, the points of two or more of the teeth of the pinion last engaging with the teeth of the rack and the teeth of the pinion in rotation 'first coming into contact with the teeth of the rack affords in the double series of teeth a grasp which prevents the disengagement of the rack at either end from the pinion. The working depth is governed by the webs on both pinion and rack. The pinion 22 is mounted upon the forward portion 27 of a power transmuting shaft 26.

This portion of the shaft is loosely mounted in the jour- Thal-box 28X upon the upper end of the vibrating pivoted bar or support 28. This support is mounted on the bed plate 10 a short distance forward of the opening 12 on said bed and upon the lower end of said support is a rock shaft 29 which extends parallel with said portion 27 of the power transmitting shaft and is mounted in the journal boxes 30 secured to the upper surfaces of said bed plate l5. With the lower end of said support 2S are connected the inner ends of the bars or arms 3l which extend a short distance outwardly from the said support 28 and in a transverse direction to the bed l0 and are inclined at an angle outwardly and lupwardly to said supports and in the proper degree so that when the pinion is in a position to pass from the gear on the straight lines of the rack to the curved ends of the rack one of the arms 3l comes into a position horizontally with the surface of the bed 10. The outer ends of the arms 3l are inclined downwardly and inwardly as at 31X".

A short distance above the upper surface of the bed plate 10 and extending at right angles to the rock shaft 29 are the flat sliding catch bolts 32 which bolts are inountedwithin the upwardly extended llugs or keepers 33 secured to the forward ends ot said bed opposite the forward vertical surfaces of thellaclr 1G. The outer ends or Shanks of the catch boltsare slightly narrower in width and are mounted in, theupwazdly extended lugs.

*VOF keepers 34: which, slL 2h direct vertical line with the [langes ll onthe` bed plate 10. Upon the portions of the catch bolts; adjacent to the inner surfaces of the lugs aresecured the pins or lugs 35 whichextend towardtllefprward vertical surfaces of the rack 16. Ex! tending around the narrower portion or crank of the catch bolt isa spiral spring 36 one end of which bearsl against thelarger portion of the catch bolt and the other @11d @geheime-inner surfaces of the 1mg or keeper 34. 1

Thienner-endsof'the catch bolts are inclined upwardly and rearwardly at 32X.

Upon; the forward vertical Surfaces. of the sides of tlm rack; 1G; at pOiflltS. a Short distance inwardly frein the beginning of the curved Marti-ons of the ends of tbn` rack are secured rigidly the bolt releasing blocks 37", the: tunersuriaces oi which blocks extend a shorta distance parallel; with the outer vertical surfaces of therack und the remaining lgines of' said surfaces. Upon one side olsf heracl, 16 the lower inclined portion 38 oi the bloclcxasL inclined downwardly and inwardly,7 and upon, theuotlier sid'e of the rack the inclined surface of` the bloc Y s reversed in position the inclined surfacesy of theblocks con ling into Contact alternately witlttltc pins or lugs 35.` onfthefcatch tous.

Upon the rearporti'on of the bed '10min reaqgolitlie supports 28 for the portion 27 ol' the, power transmitting shaft are secured xedly the lower ends of tlrnsepa rate standards 40 which are in a direct line wihlb the rock shaft29 and extend the saine distance irnllci'ght as the supports 28. Upon the upper ends oli these standards are-.journal boxes 45]: in which is journaledthc rear portion ehehe-.power transmitting shafti; rIlhe in'ner end oftheseparate portion 27 of said shaft carrying the piniprt 224 is; connected to the portjpnnn the standards 40 by means of the universal shaft. coupling or joint 42,. said portion of the shatt rssuppforted by the standard portion are inclined inwardly from/ theA 43 'upon which is a wide journal box 44. Upon the portion of the shaft 2G on standards 40 is a sprocket wheel L13` l I1 operation the power is conveyed from a suitable source to the power transmitting shaft 2G, through the sprocket wheel 43 and rotation imparted to the pinion 22. The catch bolts 32 being moved forwardly by the springs 35 the ends of the bolts engage with the arms 3l on the vibrating support 28 for the shaft carrying the pinion 22 and 'the arms are in a locked position during the periodof time the teeth upon the longitudinal side portions of thre rack are meshing with the teeth of the pinion with a rolling movement or contact and just before the engagement of the teeth'of the pinion withthc l reaches the tangent line of the curve, the inclined surfaces of one fof the bloclgs comes into contact with one of the pins or lugs 35 of the sliding catch bolts forcing said bolt. :rearwardly and disengaging the catch bolt from the arm 3l, the bolt being held in a rearward position by tliestraight surface of the block until the pinion. has. Eell't the tangent linethe end of the shaft 27 in the meantime changing position in the movement of the pinion and :the other arm 31 comes into position to be l nepeated during the reciprocal movements of the rack within the 'g1 ride plates 14. The mechanism is adapted suitable manner with the lower end of the rack and a full strolha-v obtained without loss of power and at all times -arnrll lilhe pinion held inengagement with the teetlreil'tlie :rack whether the vibrating shaft support 3]. be employed or not the arms 3l servin g to prevent slippirrgpf"'the -teeth of the pinion in raising heavyweights. Iiliscobviorrs that any kind of flexible shafting may be p employed to convey power to the pinion. ii Having fully described my invention what I noW claim as new and desire to secure by Letters Patent is l. The combination with a reciprocating frame having curved pmrtions at the ends and guidingmeans for said frame, of a circular driver or plate within said frame, said frame having parallel series of teeth on its inner surface, said teeth having outwardly curved surfaces meeting at a point and circular spaces between the teeth below the pitch line of said teeth, a web between said series of teeth i having its surface near said pitch line, the said teeth in.

the teeth of the other series, said circular plate having series of. teeth and spaces between the teeth corresponding to ther series of teeth and spaces on said frame, and in like relative positions, and a web between said series lof teeth on said circular plate having its surface near the pitch line for controlling the working depth of the teeth on said circular plate and frame.

2. In gear mechanism a reciprocatingr toothed rack guiding; devices therefor and a pinion, a rotary shaft acmatingl :said pinion a pivoted oscillating support for said pinionl :und means actuated by the reciprocating rack for moving; said oscillating support in opposite directions.

3- lm gear mechanism a reciprocating toothed raclg; aA baseer, bed, guiding supports for the said rack thereon) a pinion within the rack and a rotary shaft an oscillating support for said pinion and outwardly extended upwardly 4 inclined? arms upon said support spring actuated catches "leasing Idevices upon said rack.

teeth upon the curved end of the rack or the-pinion upon stu'ld bedadapted to engage with sai'd arms` and reV 4'. In gear mechanism the combination with` a suitable bed andnpri'ght guiding support thereof of a reciprocating;

engaged bythe other catch bolt, and thus operation is for service as.- a pumping jack the rod of the pump being indicated 44 and which may be connected in any i one serf'ies being opposite in position to the spaces between toothed rack a pinion and an oscillating support for said pinion a rotary shaft communicating power to said pinion outwardly extended upwardly inclined arms upon said oscillating support, spring actuated catch bolts upon said hed adapted to engage with the arms on said oscillating support when in a horizontal position and blocks upon said rack having inclined surfaces adapted to come into contact with and release the catch bolts alternately.

5. In gear mechanism the combination with a suitable bed and guide supports upon said bed of a reciprocating toothed rack Within saidsupports, a pinion and a rotary shaft, a rock shaft upon said bed, an oscillating supporting bar for said pinion upon said rock shaft outwardly extended upwardly inclined arms upon said oscillating support, sliding spring actuated catch bolts upon said bed adapted to engage alternately with said inclined arms, outwardly extended arms on the catch bolts and blocks upon the said racks, having inclined surfaces adapted to engage alternately with the arms on the sliding catch bolts.

WAITMAN M. MORGAN.

Witnesses:

WM. WALTER BRADY, L. F. DEAL. 

